.app-train{
    width: 100%;
    height: 100%;
    position: relative;
    .train-top{
        width: 100%;
        height: 87%;
        background-color: #000;
        justify-content: flex-end;
        padding: 20px;
        position: relative;

        video{
            width: 100%;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%,-50%);
        }
        .top-text{
            color: #fff;
            h3{
                font-size: 60px;
                font-weight: normal;
            }
            p{
                font-size: 20px;
                line-height: 40px;
            }
        }
    }

    .train-bottom{
        position: absolute;
        bottom: -1px;
        width: 100%;
        height: 90px;
        padding: 10px 20px;
        justify-content: space-around;
        align-items: center;
        p{
            width: 0%;
            height: 5px;
            position: absolute;
            top: -2px;
            left: 0;
            background-color: #1592cc;
        }
        i{
            font-size: 42px;
            font-weight: normal;
            &:nth-child(1){
                font-size: 54px !important;
            }
            &:nth-child(3){
                font-size: 54px !important;
            }
        }
    }
}

.mask{
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: #1592cc;
    display: none;
    p{
        color: #fff;
        font-size: 18px;
        margin: 50px 30px;
        line-height: 26px;
    }
    .player-box{
        /* background-color: red; */
        width: 100%;
        position: absolute;
        top: 45%;
        left: 50%;
        transform: translateX(-50%);
        .button-box{
            display: flex;
            justify-content: space-around;
        }

        button{
            width: 110px;
            height: 110px;
            border-radius: 50%;
            background-color: #79f0c2;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: #fff;
            &:nth-child(2){
                background-color: #ff6060;
            }
            i{
                font-size: 40px !important;

            }
        }

        .course-desc{
            width: 80%;
            height: 100px;
            border-radius: 10px;
            overflow: hidden;
            border: 1px solid #fff;
            display: flex;
            align-items: center;
            background-color: transparent;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            margin-top: 25px;
            p{
                margin-left: 45px;
                display: flex;
                flex-direction: column;
                justify-content: space-around;
                align-items: center;
                span{
                    font-size: 16px;
                    color: #aad9f7;
                }
                em{
                    font-size: 18px;
                    font-style: normal;
                }
            }
        }
    }
}